When Robert Downey, Jr. was offered the part of playing the husband to Brooke Shields' character, he decided he wanted to play the character as a gay man, who hits on every guy he met in the film. He became a bit nervous when he found out one of those men would be Mike Tyson, but James Toback told him to stick to his original plan.
The trivia item below may give away important plot points.
Jared Leto only has three scenes. One being in the classroom with his students as an English teacher. The second being in the club, and the third, with the ending credits, as he is holding Robert Downey, Jr. hand as his new boyfriend. He only had about two minutes of screentime.